bye

bye (http://definr.com/bye)

     adj : minor or subordinate; `by' is often used in combination; "a
           side interest"; "a by (or bye) effect"; "only a by
           comment"; "by-election"; "bye-election"; "a
           by-product"; "by-play" [syn: side(a), by(a), bye(a)]
     n 1: you advance to the next round in a tournament without
          playing an opponent; "he had a bye in the first round"
          [syn: pass]
     2: a farewell remark; "they said their good-byes" [syn: adieu,
         adios, arrivederci, auf wiedersehen, au revoir, bye-bye,
         cheerio, good-by, goodby, good-bye, goodbye, {good
        day}, sayonara, so long]